Short answer: the Paradigm Monitor SE Atom. It ranks #26 of 56 bookshelf speakers by sound quality at $318; the KEF Q100 ranks #38 and costs $550, so there is not much of a tradeoff to weigh.
What the Paradigm Monitor SE Atom gets right: Good, consistent directivity across the on-axis, listening-window, and off-axis curves makes the Atom easier to equalize and less room-dependent than many budget speakers. The catch: On-axis response is uneven out of the box, with a 2-4kHz dip followed by a peak and a resonance around 15kHz that the reviewer said gives it a bright, “showroom” voicing without EQ correction.
What the KEF Q100 offers: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. Watch for: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction.
Buy the Paradigm Monitor SE Atom. It ranks higher for sound quality than the KEF Q100 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Paradigm Monitor SE Atom | KEF Q100 | |
|---|---|---|
| Price | $318 | $550 Discontinued |
| Ranked | #26 of 56 in Medium Size Bookshelf Speakers | #38 of 56 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 82Hz (measured, Audio Science Review) | 85Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) | 65Hz (measured, Audio Science Review) |
| Drivers | 1" X-PAL aluminum dome tweeter (ferrofluid, PPA lens), 5.5" mineral-filled polypropylene mid/bass | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter |
| Dimensions | 12.75H x 7.125W x 11D in | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) |
| Weight | 11.9 lbs / 5.4 kg each | 13 lbs / 5.9 kg each |
| Frequency Response | 61Hz - 21kHz +/-3dB (Manufacturer specified) | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 85dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 8 ohms | 8 ohms nominal |
| Power Handling | 15-100W recommended | - |
| Woofer Cabinet | ported, rear | ported, rear |
| Discontinued | - | Yes |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Wharfedale Diamond 12.1 vs Sony SS-CS5 M2
- Sony SS-CS5 M2 vs ELAC Uni-Fi 2.0 UB52
- Sony SS-CS5 M2 vs Totem Kin One
- KEF Q100 vs Q Acoustics 3020i
- JBL Stage A120 vs KEF Q100
The Two Speakers In Full
Paradigm Monitor SE Atom: $318 Amazon
Pros: Good, consistent directivity across the on-axis, listening-window, and off-axis curves makes the Atom easier to equalize and less room-dependent than many budget speakers. Bass tuning is well judged, letting the woofer play loud on demanding tracks without bottoming out even without a subwoofer. Paradigm’s NRC research pedigree shows in the horizontal and vertical dispersion measurements.
Cons: On-axis response is uneven out of the box, with a 2-4kHz dip followed by a peak and a resonance around 15kHz that the reviewer said gives it a bright, “showroom” voicing without EQ correction. There’s no meaningful bass extension for full-range use, so a subwoofer is effectively required for anything beyond desktop or near-field listening.
Full Paradigm Monitor SE Atom review and specifications →
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 82Hz (measured, Audio Science Review) |
| Dimensions | 12.75H x 7.125W x 11D in |
| Drivers | 1" X-PAL aluminum dome tweeter (ferrofluid, PPA lens), 5.5" mineral-filled polypropylene mid/bass |
| Frequency Response | 61Hz - 21kHz +/-3dB (Manufacturer specified) |
| Impedance | 8 ohms |
| Power Handling | 15-100W recommended |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 11.9 lbs / 5.4 kg each |
| Woofer Cabinet | ported, rear |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Paradigm Monitor SE Atom vs Sony SS-CS5 M2
- Paradigm Monitor SE Atom vs ELAC Debut 2.0 B5.2
- Paradigm Monitor SE Atom vs Dynaudio Emit M10
- Paradigm Monitor SE Atom vs JBL Studio 530
- Paradigm Monitor SE Atom vs ELAC BS U5
- Paradigm Monitor SE Atom vs Boston Acoustics A25
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- See all 17 comparisons
KEF Q100: $550 Discontinued
Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive.
Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.
Full KEF Q100 review and specifications →
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) |
| Discontinued | Yes |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons